Oil strainer for automobile engines



Jan. 9, 1923.

J. S. JOHNSON.

OIL STRAlNER FOR AUTOMOBILE ENGINES.

ORIGINALFILED FEB-24.1920.

T lilllllllu straining the lubricating'oil in automobile 1 transmissioncasings for the purpose of capat Will a x aosnrn s. reason, or. i

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a noane 'aieu am-a at; rare, aerial Ito. ace ate. mar ime ea, m fim pjmw"g To all whom it may concern:-

"Be itknown that T, .Josnrnr f'tt citizen of the lUnited States, andv aresident i of Jamaica, in the county of Queens and State of New York,have invented certain new and useful Uil Strainers for Automobile ifEngines, of which the following is a specif'r "cation;

device for automatically and continuously turing orholding all foreignsubstances contained in the oil whereby such substances will notcontinue to circulate through or around the parts in the transmissioncasing and motor. In certain automobiles and especiallythe Ford, fabriclinings are used on the several clutches in the transmission casing andas these linings wear, small particles of cotton work loose from thefabric and mix with the lubricating oil in the transmission casing. Sometimes friction in the clutches causes some of the fabric lining to becharred or partly burned, forming carbon [which works free and mixeswith the lubri- I cating oil in the casing. These substances,

- and any others entering the lubricating oil of the transmissioncasing, are obviously ob-v jectionable and interfere with lubrication aswell as with the proper operation of the I parts contained in thecasing. My object till is to provide a very simple device for automatically straining or capturing and holding all foreign substances inthe lubricating oil. The device is adapted to be easily attached to thetransmission casing without modification of the latter, and in thepreferred construction the device is clamped I with the cover of thecasing so that the same bolts which secure the cover serve to secure mydevice in place; and whenever the cover is removed the straining devicemay be readily removed and the accumulated substances ma be removedtherefrom.

'1 the drawing forming part of this application.

over the drums removed to show; the straining device in place, a Figure2 is a side elevation thereof, partly in section, but with thetransmission mechanism omitted, a

S. rlonuvson,

1 the pur 1 fThe present invention relates to a simple" for illustrationpurposes.

l-Figure' 3 is' a perspective view of the strainer'removed, and a I a"Figure t is a fragmentary view showin howpt hefly wheel throws the'oilonto a; stralnlng device. r v

In the drawings T have s'hown the' trans- IIllSSlOIl' casing 1 of a Fordautomobile for se of illustrating one application of :my inventionthough it is to be understood-that the invention is adapted to be usedin other automobiles.

This transmission casing is inclined from' the horizontal, or atleastthe top 2 thereof is so lnchned. This casing comprises the wider forwardportion 3 and the narrower rear portion 4. The portion 3 receivestheengine shaft 5 and it contains the armature 6 of the magneto, as well'as the combined flywheel and field magnets 7 of'the engine which ismountedonthe shaft 5.

The rear portion 4 of the casing generally contains the reverse drum8,.the low speed drum 9 and the brake drum 10.

There is a dome cover 11 fitting over the entlre casing 1 and there is aremovable cover or cap for closing the opening 12 but this cover isremoved in the drawings This cover is adapted to be clamped in'place bybolts passing through apertures 13 and these'same bolts secure thestrainer in place.

Lubrication for the mechanism is contalned within the casing 1 andcirculation is eflected by the fly wheel 7 throwing the 011 from theforward portion of the casing rearwardly. a

Tn the preferred form of my invention there is a trough 14. having aflange 15 along one side which is placed on the pack- 1ng along one sideof the opening 12, so that when the cover is applied tov the opening 12and bolted down the flange 15 will be clampedbetween the rim of thecover and the packing and casing 1. The apertures 16 through them thebolts which secure the removable cover. Figure 1 is a plan View of thetransmission casing of a Ford automobile, with the cap The trough 14hangs down below the level of the flange 15 so that it lies under thecover which closes the opening 12 and the trough is preferably, thoughnot necessarily open at the top and its sides 17, 18 incline to a llshape as-shown. The forward end 19 of this trough projects into theforward part 3 of the casing 1 and it is ositioned near the fly wheel 7so that the 011 carried up by the latter will be thrown on this end ofthe trough, somewhat as shown in F igure 4. As the trough inclinesdownwardly toward its rear end, the oil thrown upon the end 19 will beconducted by the troughl past the several drums 8, 9, 10 to the rearwardend of the casing 1. At this, lower, end of the trough I have arrangeda'lateral arm 20 which supports a basket or strainer 21 preferably madeof fine mesh wire fabric. It consists, in the form shown, of a slantinbottom 22, side walls 23, 24, end wall 25 an a top 26 which onlypartially closes the top of the basket. The oil which travels down thetrough 14 passes laterally out at 27 and intothe basket. In passingthrou h the latter the oil is strained and any oreign substancescontained therein are captured and held in the basket. As the oil iscontinually circulated in the manner described While the automobile isin operation it is continually being strained automatically as itcirculates and foreign substances will remain but a short time -in thelubricating oil. The basket 21 will serve to hold all the substancewhich is likely to collect for a considerable period. Whenever the coveron the opening 12 is removed it is very easy to remove the strainer,shake the material out of the basket 21 and return the device in propercirculation of the oil in the transmission casing.

Having described my invention, what I clalm is:

1. A device of the class described adapted to be placed in thetransmission casing of an automobile, comprising a flange adapted to beclamped between the transmission casing and ltsremovable cover, aninclined trough dependlng from said flange within said casmg and havingone end' projecting adjacent the fly wheel in said casing whereby theoil thrown from said wheel will be received in said trough, and a basketadapted to receive the oil from the lower end of said trough and toseparate foreign substances from the oil as the latter the basket. .2. Adevice of the class described comprising a supporting flange, aninclined trough depending from said flange and a straining basketprojecting laterally from one end of said trough for the purpose setforth, said basket having an inclined bottom, side walls, and a partialtop closure 26.

Signed at the city, county and State of New York, this 22nd day ofJanuary, 1920.

JOSEPH S. JOHNSON.

passes in circulation through

